522 



BOAED OF AGRICULTURE. 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid, 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid. 

 Potassium oxide, . 

 Niti'ogen, 

 Insoluble matter, . 



Per cent. 



17.61 

 9.00 

 4.96 

 2.56 

 1.48 

 2.84 

 2.87 

 7.00 



Valuation per two thousand pounds : — 



99.2 pounds of soluble phosphoric acid, 

 51.2 pounds of reverted phosphoric acid, 

 29.6 pounds of insoluble phosphoric acid, 

 56.8 pounds of potassium oxide, . 

 57.4 pounds of nitrogen. 



$25 13 



Bay State Fertilizer. 



(Clark's Cove Guano Company, New Bedford, Mass.; collected of M. A. Stone, 



Reading, Mass.) 



Guaranteed composition : Total phosphoric acid, 9| to 14 

 per cent. ; soluble phosphoric acid, 7 to 8^ per cent. ; re- 

 verted phosphoric acid, 1 to 2| per cent. ; insoluble phos- 

 phoric acid, 1^ to 3 per cent. ; potassium oxide, 2 to 3 per 

 cent. ; nitrogen, 2.1 to 2.8 per cent, (equivalent to am- 

 monia, 2| to 3^ per cent.). 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid. 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid, 

 Potassiima oxide, . 

 Nitrogen, 

 Insoluble matter, . 



Per cent. 



12.18 

 12.56 

 8.12 

 1.70 

 2.74 

 2.72 

 3.24 

 5.29 



Valuation per two thousand pounds : — 



162.4 pounds of soluble phosphoric acid, 

 34.0 pounds of reverted phosphoric acid, 

 54.8 pounds of insoluble phosphoric acid, 

 64.4 pounds of potassiima oxide, . 

 64.8 pounds of niti-ogen. 



$30 83 



